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Yao G, Parris MR, Kuo WC, Pörzgen P, Castillo B, Mason ES, Chinchilla A, Huang J, Suzuki S, Ross R, Akana E, Vander Schuit S, Miller SP, Penner R, Sun HS, Feng ZP, Hull KG, Romo D, Fleig A, Horgen FD. Transient Receptor Potential Melastatin 7 (TRPM7) Ion Channel Inhibitors: Preliminary SAR and Conformational Studies of Xenicane Diterpenoids from the Hawaiian Soft Coral Sarcothelia edmondsoni. J Nat Prod 2024. [PMID: 38537009 DOI: 10.1021/acs.jnatprod.3c00942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Waixenicin A, a xenicane diterpene from the octocoral Sarcothelia edmondsoni, is a selective, potent inhibitor of the TRPM7 ion channel. To study the structure-activity relationship (SAR) of waixenicin A, we isolated and assayed related diterpenes from S. edmondsoni. In addition to known waixenicins A (1) and B (2), we purified six xenicane diterpenes, 7S,8S-epoxywaixenicins A (3) and B (4), 12-deacetylwaixenicin A (5), waixenicin E (6), waixenicin F (7), and 20-acetoxyxeniafaraunol B (8). We elucidated the structures of 3-8 by NMR and MS analyses. Compounds 1, 2, 3, 4, and 6 inhibited TRPM7 activity in a cell-based assay, while 5, 7, and 8 were inactive. A preliminary SAR emerged showing that alterations to the nine-membered ring of 1 did not reduce activity, while the 12-acetoxy group, in combination with the dihydropyran, appears to be necessary for TRPM7 inhibition. The bioactive compounds are proposed to be latent electrophiles by formation of a conjugated oxocarbenium ion intermediate. Whole-cell patch-clamp experiments demonstrated that waixenicin A inhibition is irreversible, consistent with a covalent inhibitor, and showed nanomolar potency for waixenicin B (2). Conformational analysis (DFT) of 1, 3, 7, and 8 revealed insights into the conformation of waixenicin A and congeners and provided information regarding the stabilization of the proposed pharmacophore.
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Affiliation(s)
- Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Matthew R Parris
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - W Cedric Kuo
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Peter Pörzgen
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Brandi Castillo
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Evan S Mason
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Andres Chinchilla
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Junhao Huang
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - Sayuri Suzuki
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - Rylee Ross
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Ellis Akana
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Savana Vander Schuit
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Steven P Miller
- Department of Pediatrics, University of British Columbia and BC Children's Hospital, Vancouver, British Columbia V6H 3N1, Canada
| | - Reinhold Penner
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | | | | | - Kenneth G Hull
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
- The Baylor Synthesis and Drug-Lead Discovery Laboratory, Baylor University, Waco, Texas 76798, United States
| | - Daniel Romo
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Andrea Fleig
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - F David Horgen
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
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Chen CH, Yang Y, Ke JP, Yang Z, Li JY, Zhang YX, Liu G, Liu Z, Yao G, Bao GH. Novel Flavonol Alkaloids in Green Tea: Synthesis, Detection, and Anti-Alzheimer's Disease Effect in a Transgenic Caenorhabditis elegans CL4176 Model. J Agric Food Chem 2024; 72:3695-3706. [PMID: 38324412 DOI: 10.1021/acs.jafc.3c06608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Novel N-ethy-2-pyrrolidinone-substituted flavonols, myricetin alkaloids A-C (1-3), quercetin alkaloids A-C (4a, 4b, and 5), and kaempferol alkaloids A and B (6 and 7), were prepared from thermal reaction products of myricetin, quercetin, kaempferol─l-theanine, respectively. We used HPLC-ESI-HRMS/MS to detect 1-7 in 14 cultivars of green tea and found that they were all present in "Shuchazao," "Longjing 43", "Fudingdabai", and "Zhongcha 108" green teas. The structures of 1-4 and 6 were determined by extensive 1D and 2D NMR spectroscopies. These flavonol alkaloids along with their skeletal flavonols were assessed for anti-Alzheimer's disease effect based on molecular docking, acetylcholinesterase inhibition, and the transgenic Caenorhabditis elegans CL4176 model. Compound 7 strongly binds to the protein amyloid β (Aβ1-42) through hydrogen bonds (BE: -9.5 kcal/mol, Ki: 114.3 nM). Compound 3 (100 μM) is the strongest one in significantly extending the mean lifespan (13.4 ± 0.5 d, 43.0% promotion), delaying the Aβ1-42-induced paralysis (PT50: 40.7 ± 1.9 h, 17.1% promotion), enhancing the locomotion (140.0% promotion at 48 h), and alleviating glutamic acid (Glu)-induced neurotoxicity (153.5% promotion at 48 h) of CL4176 worms (p < 0.0001).
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Affiliation(s)
- Chen-Hui Chen
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Yi Yang
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Jia-Ping Ke
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Zi Yang
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Jia-Yi Li
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Yu-Xing Zhang
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Guangjin Liu
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Zhijun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Guan-Hu Bao
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, Anhui, China
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Zheng G, Huang L, Feng Y, Zhang H, Gao B, Ma X, Sun Y, Abudurexiti A, Yao G. Discovery of highly functionalized grayanane diterpenoids from the flowers of Rhododendron molle as potent analgesics. Bioorg Chem 2024; 142:106928. [PMID: 37922768 DOI: 10.1016/j.bioorg.2023.106928] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
A systematical investigation on the chemical constituents of the flowers of Rhododendron molle (Ericaceae) led to the isolation and characterization of thirty-eight highly functionalized grayanane diterpenoids (1-38), including twelve novel analogues molleblossomins A-L (1-12). Their structures were elucidated by comprehensive methods, including 1D and 2D NMR analysis, calculated ECD, 13C NMR calculations with DP4+ probability analysis, and single crystal X-ray diffraction. Molleblossomins A (1), B (2), and E (5) are the first representatives of 2β,3β:9β,10β-diepoxygrayanane, 2,3-epoxygrayan-9(11)-ene, and 5,9-epoxygrayan-1(10),2(3)-diene diterpenoids, respectively. Molleblossomins G (7) and H (8) represent the first examples of 1,3-dioxolane-grayanane conjugates furnished with the acetaldehyde and 4-hydroxylbenzylidene acetal moieties, respectively. All grayanane diterpenoids 1-38 were screened for their analgesic activities in the acetic acid-induced writhing model, and all of them exhibited significant analgesic activities. Diterpenoids 6, 13, 14, 17, 20, and 25 showed more potent analgesic effects than morphine at a lower dose of 0.2 mg/kg, with the inhibition rates of 51.4%, 68.2%, 94.1%, 66.9%, 97.7%, and 60.0%, respectively. More importantly, even at the lowest dose of 0.04 mg/kg, rhodomollein X (14), rhodojaponin VI (20), and rhodojaponin VII (22) still significantly reduced the number of writhes in the acetic acid-induced pain model with the percentages of 61.7%, 85.8%, and 64.6%, respectively. The structure-activity relationship was summarized and might provide some hints to design novel analgesics based on the functionalized grayanane diterpenoids.
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Affiliation(s)
- Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiaomin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yenan Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Adila Abudurexiti
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashi 844006, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China; Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashi 844006, People's Republic of China.
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Zheng G, Huang L, Feng Y, Zhang H, Ma X, Gao B, Sun Y, Abudurexiti A, Yao G. Structurally diverse analgesic diterpenoids from the flowers of Rhododendron molle. Fitoterapia 2024; 172:105770. [PMID: 38056699 DOI: 10.1016/j.fitote.2023.105770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Thirteen diterpenoids (1-13), classified into four structurally diverse carbon skeletons, including 1,5-seco-kalmane (1 and 6), grayanane (2-11), kalmane (12), and rhodomollane (13), were isolated from the flowers extract of Rhododendron molle. Among them, rhodomollinols A - E (1-5) were five new diterpenoids and their structures were elucidated by extensive spectroscopic methods including HRESIMS, UV, IR, 1D and 2D NMR, as well as quantum ECD calculations. Rhodomollinol A (1) is the first representative of a 6-deoxy-1,5-seco-kalmane diterpenoid. The abnormal NMR phenomenon of the presence of only 9 carbon resonances instead of 20 carbons in the 13C NMR spectrum of 1 was observed and elucidated by the quantum NMR calculations. All diterpenoids 1-13 showed significant analgesic activities in an acetic acid-induced writhing model. It's the first time to report the analgesic activity of a rhodomollane-type diterpenoid. At a dose of 1.0 mg/kg, diterpenoids 1-3, 6, 8, 9, and 12 reduced the writhe numbers with inhibition rates over 50%, and 9 exhibited stronger analgesic activity with a writhe inhibition rate of 89.7% than that of the positive control morphine. Importantly, even at the lowest dose of 0.04 mg/kg, rhodomollinols A (1) and B (2), rhodomollein X (7), and 2-O-methylrhodojaponin VI (9) still showed more potent analgesic effects than morphine with the writhe inhibition rates of 51.8%, 48.0%, 61.7%, and 60.0%, respectively. A preliminary structure-activity relationship might provide some clues to design potential analgesics on the basis of structurally diverse Ericaceae diterpenoids.
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Affiliation(s)
- Guijuan Zheng
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashi 844006, People's Republic of China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiaomin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yenan Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Adila Abudurexiti
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashi 844006, People's Republic of China.
| | - Guangmin Yao
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashi 844006, People's Republic of China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
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Zhou Z, Wang Y, Zhao F, Yao G, Yu H, Yu H, Bu L, Lu Z, Yan S. Radiation Induced Lung Injury in Rats after Pre-Oxygenation Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e279-e280. [PMID: 37785046 DOI: 10.1016/j.ijrobp.2023.06.1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Deep inspiratory breath holding (DIBH) has been widely used during the radiotherapy of thoracic tumors. The main disadvantage of voluntary DIBH is the short duration of each breath hold. The hypocapnia induced by hyperoxia (oxygen concentration > 50%) pre-oxygenation (PreO2) combined with mechanical hyperventilation has been reported to prolong the duration of single breath hold, but its safety remains controversial, especially the sensitivity of lung tissue to radiation damage under hyperoxia exposure has not been elucidated. In this study, we aim to investigate the changes of radiation induced lung injury in rats after PreO2 radiation. MATERIALS/METHODS We evaluated the lung tissue of rats at different time points (48h, 2w, 4w, 8w, 12w) after thoracic radiation (15Gy single fraction to the right lung), and sequenced the transcriptome of lung tissue at 48 hours after irradiation. Rat cohorts (n = 7/group): 1. Control (Con); 2. Radiation group (RT); 3. Pre-oxygenation (oxygen concentration > 90%) for 8 hours before thoracic radiation (PreO2). RESULTS The inflammatory exudation emerged in the pulmonary interstitium at 48 hours, and reached the most serious alveolitis after four weeks of irradiation (the comparison of alveolitis scores in RT4w vs Con4w and PreO2(4w) vs Con4w, P<0.001) on hematoxylin-eosin staining. While the alveolitis scores in RT group and PreO2 group were not statistically different at each time point. Masson staining showed that the pulmonary fibrosis in the RT group and the PreO2 group reached an obvious pathological change at 12 weeks after irradiation, but the difference between the two groups was not significant. Transcriptome sequencing showed that the number of differential genes in PreO2 vs Con was 559 (302 up-regulated genes and 257 down-regulated genes). The GO enrichment analysis indicated that chromosome segregation was the most significant functional item with P value in the comparative analysis, and the KEGG enrichment analysis suggested that cell division was the most significant enrichment pathway of these differential genes. While there was a small quantity of differential genes in PreO2 vs RT group (3 up-regulated genes and 12 down-regulated genes). Pentose and glucuronate conversions were the most significant enrichment pathway of these differential genes. CONCLUSION This study demonstrated that PreO2 radiotherapy did not increase the severity of radiation induced lung injury in rats compared to conventional radiotherapy. Further study should be conducted to confirm these results and to investigate the regulatory mechanism of pneumonia caused by PreO2 radiotherapy.
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Affiliation(s)
- Z Zhou
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Wang
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - F Zhao
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - G Yao
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - H Yu
- The First Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - H Yu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - L Bu
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Z Lu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - S Yan
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Zhang Y, Ye X, Ge J, Guo D, Zheng D, Yu H, Chen Y, Yao G, Lu Z, Yuille A, Lu L, Jin D, Yan S. Deep Learning-Based Multi-Modality Segmentation of Primary Gross Tumor Volume in CT and MRI for Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e498. [PMID: 37785566 DOI: 10.1016/j.ijrobp.2023.06.1739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The delineation of primary gross tumor volume (GTV) of nasopharyngeal carcinoma (NPC) is an essential step for radiotherapy planning. In clinical practice, radiation oncologists manually delineate the GTV in planning CT with the help of diagnostic MRI. This is because NPC tumors are closely adjacent to many important anatomic structures, and CT and MRI provide complementary strength to accurately determine the tumor extension boundary. Manual delineation is time-consuming with the potential registration errors between MRI and CT decreasing the delineation accuracy. In this study, we propose a fully automated GTV segmentation method based on CT and MRI by first aligning MRI to CT, and then, segmenting the GTV using a multi-modality deep learning model. MATERIALS/METHODS We collected 104 nasopharyngeal carcinoma patients with both planning CT and diagnostic MRI scans (T1 & T2 phases). An experienced radiation oncologists manually delineated the GTV, which was further examined by another senior radiation oncologist. Then, a coarse to fine cross-modality registration from MRI to CT was conducted as follows: (1) A rigid transformation was performed on MRI to roughly align MRI to CT with similar anatomic position. (2) Then, the region of interest (RoI) on both CT and rigid-transformed MRI were cropped. (3) A leading cross-modality deformable registration algorithm, named DEEDS, was applied on the cropped MRI and CT RoIs to find an accurate local alignment. Next, using CT and registered MRI as the combined input, a multi-modality deep segmentation network based on nnUNet was trained to generate the GTV prediction. 20% patients were randomly selected as the unseen testing set to quantitatively evaluate the performance. RESULTS The quantitative NPC GTV segmentation performance is summarized in Table 1. The deep segmentation model using CT alone achieved reasonable high performance with 76.6% Dice score and 1.34mm average surface distance (ASD). When both CT and registered MRI were used, the segmentation model further improved the performance by 0.9% Dice score increase and 11% relative ASD error reduction, demonstrating the complementary strength of CT and MRI in determining NPC GTV. Notably, the achieved 77.5% Dice score and 1.19mm ASD by the multimodality model is among the top performing results reported in recent automatic NPC GTV segmentation using either CT or MRI modality. CONCLUSION We developed a fully automated multi-modal deep-learning model for NPC GTV segmentation. The developed model can segment the NPC GTV in high accuracy. With further optimization and validation, this automated model has potential to standardize the NPC GTV segmentation and significantly decrease the workload of radiation oncologists in clinical practice.
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Affiliation(s)
- Y Zhang
- Johns Hopkins University, Baltimore, MD
| | - X Ye
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - J Ge
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - D Guo
- Alibaba Group (US) Inc., New York, NY
| | - D Zheng
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - H Yu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Y Chen
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - G Yao
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Z Lu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - A Yuille
- Johns Hopkins University, Baltimore, MD
| | - L Lu
- Alibaba Group (US) Inc., New York, NY
| | - D Jin
- Alibaba Group (US) Inc., New York, NY
| | - S Yan
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Chen CH, Yu JY, Yang Z, Ke JP, Qi Y, Yang Y, Gao B, Yao G, Bao GH. Novel methylated flavoalkaloids from Echa 1 green tea inhibit fat accumulation and enhance stress resistance in Caenorhabditis elegans. Food Chem 2023; 413:135643. [PMID: 36773353 DOI: 10.1016/j.foodchem.2023.135643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 01/19/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023]
Abstract
Methylation is a common structural modification of catechins in tea, which can improve the bioavailability of catechins. Flavoalkaloids are catechin derivatives with a nitrogen containing five-membered ring at the C-6 or C-8 position. Here we isolated three new methylated flavoalkaloids from Echa 1 green tea (Camellia sinensis cv. Echa 1) and synthesized another four new methylated flavoalkaloids. The structures of the new ester-type methylated catechins (etmc)-pyrrolidinone A-G (1-7) were elucidated by various spectroscopic techniques, including nuclear magnetic resonance (NMR), optical rotation, infrared, UV-vis, experimental and calculated circular dichroism (CD) spectra, and high-resolution mass. Among them, 6 and 7 showed the strongest α-glucosidase inhibitory activity and significantly lowered lipid content of Caenorhabditis elegans with 73.50 and 67.39% inhibition rate, respectively. Meanwhile, 6 and 7 also exhibited strong antioxidant activity in vitro and stress resistance to heat, oxidative stress, and UV irradiation in nematodes.
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Affiliation(s)
- Chen-Hui Chen
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Jing-Ya Yu
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Zi Yang
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Jia-Ping Ke
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Yan Qi
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Yi Yang
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Guan-Hu Bao
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Healthy Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China.
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8
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Zhu A, Lyu Y, Xia Q, Wu Y, Tang D, He C, Zheng G, Feng Y, Wang Y, Yao G, Ding H. Divergent Synthetic Approach to Grayanane Diterpenoids. J Am Chem Soc 2023. [PMID: 37027322 DOI: 10.1021/jacs.3c00753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
The total syntheses of nine grayanane diterpenoids, namely, GTX-II (1), GTX-III (2), rhodojaponin III (3), GTX-XV (4), principinol D (5), iso-GTX-II (6), 1,5-seco-GTX-Δ1,10-ene (7), and leucothols B (8) and D (9), that belong to five distinct subtypes, were disclosed in a divergent manner. Among them, six members were accomplished for the first time. The concise synthetic approach features three key transformations: (1) an oxidative dearomatization-induced [5 + 2] cycloaddition/pinacol rearrangement cascade to assemble the bicyclo[3.2.1]octane carbon framework (CD rings); (2) a photosantonin rearrangement to build up the 5/7 bicycle (AB rings) of 1-epi-grayanoids; and (3) a Grob fragmentation/carbonyl-ene process to access four additional subtypes of grayanane skeletons. Density functional theory calculations were performed to elucidate the mechanistic origins of the crucial divergent transformation, which combined with late-stage synthetic findings provided insights into the biosynthetic relationships between these diverse skeletons.
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Affiliation(s)
- An Zhu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yumeng Lyu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Qidong Xia
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Yufei Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Dongmin Tang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Chi He
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Guijuan Zheng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuanyuan Feng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yong Wang
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
| | - Guangmin Yao
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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9
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Yao G, Zhu C, Qin T, Wang M, Sun Z, Tang R, Zhao C, Jiang H, Xu H. Oxidative Annulation of Aldehydes, 5‐Aminopyrazoles, and Nitriles: Synthesis and Applications of Pyrazolo[3,4‐
d
]Pyrimidines. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- G. Yao
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - C. Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology 510640 Guangzhou People's Republic of China
| | - T. Qin
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - M. Wang
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - Z. Sun
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - R.‐Y. Tang
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - C. Zhao
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
| | - H. Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology 510640 Guangzhou People's Republic of China
| | - H. Xu
- Key Laboratory of Natural Pesticide and Chemical Biology Ministry of Education South China Agricultural University 510642 Guangzhou People's Republic of China
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10
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Feng Y, Zhang H, Gao B, Zheng G, Zha S, Yao G. Highly oxygenated grayanane diterpenoids with structural diversity from the flowers of Rhododendron dauricum and their analgesic activities. Bioorg Chem 2023; 132:106374. [PMID: 36682149 DOI: 10.1016/j.bioorg.2023.106374] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/24/2022] [Accepted: 01/12/2023] [Indexed: 01/18/2023]
Abstract
Twenty-eight grayanane diterpenoids (1-28) including 13 new ones, named daublossomins A-M (1-13), and two new natural products, 3-O-acetylgrayanotoxin II (14) and 10-epi-grayanotoxin III (15), were isolated from the flowers of Rhododendron dauricum L. (Ericaceae). Their structures were elucidated by means of comprehensive spectroscopic methods and quantum chemical calculations (13C NMR-DP4+ analysis and calculated ECD), and the absolute configurations of ten grayanane diterpenoids 1, 4, 5, 7, 8, 22, 23, 25, 27, and 28 were determined by X-ray crystallographic analysis. Daublossomin A (1) represents the first example of an 11,16-epoxygrayan-6-one diterpenoid. Daublossomins B (2) and C (3) are the first examples of 9β,10β-epoxygrayanane diterpenoids, and daublossomin I (9) is the second conjugated grayan-1(5),6(7),9(10)-triene diterpenoid. Compounds 1-11 and 13-27 were evaluated for their analgesic activities in the HOAc-induced writhing test in mice, and 1-8, 10, 11, 13, 15, 17, 18, 22-24, and 26 exhibited significant analgesic effects at a dose of 5.0 mg/kg (inhibition rates > 50%). Among them, daublossomins A (1) and F (6) still showed potent analgesic activity even at a lower dose of 0.2 mg/kg with the inhibition rates of 54.4% and 55.2%, respectively. Grayanotoxin III (20) showed more potent analgesic activities than the positive control, morphine, at a dose of 0.04 mg/kg. A preliminary structure-activity relationship for the analgesic grayanane diterpenoids was discussed, providing some useful clues to design and develop structurally novel potent analgesics.
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Affiliation(s)
- Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Suqin Zha
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China; Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashgar 844007, People's Republic of China.
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11
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Zhan G, Gao B, Zhou J, Liu T, Zheng G, Jin Z, Yao G. Structurally diverse alkaloids with nine frameworks from Zephyranthes candida and their acetylcholinesterase inhibitory and anti-inflammatory activities. Phytochemistry 2023; 207:113564. [PMID: 36535411 DOI: 10.1016/j.phytochem.2022.113564] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/26/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Twenty-six structurally diverse Amaryllidaceae alkaloids, including ten undescribed compounds named zephyranines A-I and 6-O-ethylnerinine, two undescribed natural products zephyranthine-6-one and 3-O-deacetyl-sternbergine, were isolated from whole plants of Zephyranthes candida. Their structures were determined by HRESIMS, 1D and 2D NMR, CD data analysis, NMR and ECD calculations, and single-crystal X-ray diffraction analysis. All structures were classified into nine framework types: 10b,11-seco-crinine, graciline, crinine, homolycorine, trisphaeridine, lycorine, galasine, tazettine, and belladine. Zephyranine A represents the first naturally occurring 10b,11-seco-crinine type alkaloid, and zephyranine B is the sixth graciline type alkaloid. 6-O-ethylnerinine is an artifact from the extraction and isolation. All isolates were evaluated for their acetylcholinesterase (AChE) inhibitory and anti-inflammatory activities. Zephyranines A, G, and H exhibited moderate AChE inhibitory activities, with IC50 values of 8.2, 39.0, and 10.8 μM, respectively. Zephyranine B, haemanthamine, haemanthidine, 11-hydroxyvittatine, and 8-demethoxy-10-O-methylhostasine exhibited potent anti-inflammatory activity on the LPS-induced NO production in RAW264.7 mouse macrophages with IC50 values of 21.3, 4.6, 12.2, 5.6, and 17.4 μM, respectively. Structure-activity-relationship analysis and docking studies indicated that interactions with the key Trp286 and Tyr337 residues are required for potent AChE inhibitors.
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Affiliation(s)
- Guanqun Zhan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Tingting Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhong Jin
- State Key Laboratory of Elementoorganic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China; Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashgar, 844007, China.
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science, Kashi University, Kashgar, 844007, China.
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12
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Zheng G, Lv K, Wang H, Huang L, Feng Y, Gao B, Sun Y, Li Y, Huang J, Jin P, Xu X, Horgen FD, Fang C, Yao G. Piericones A and B as Potent Antithrombotics: Nanomolar Noncompetitive Protein Disulfide Isomerase Inhibitors with an Unexpected Chemical Architecture. J Am Chem Soc 2023; 145:3196-3203. [PMID: 36696679 DOI: 10.1021/jacs.2c12963] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Extracellular protein disulfide isomerase (PDI) is a promising target for thrombotic-related diseases. Four potent PDI inhibitors with unprecedented chemical architectures, piericones A-D (1-4), were isolated from Pieris japonica. Their structures were elucidated by spectroscopic data analysis, chemical methods, quantum 13C nuclear magnetic resonance DP4+ and electronic circular dichroism calculations, and single-crystal X-ray diffraction analysis. Piericones A (1) and B (2) were nanomolar noncompetitive PDI inhibitors possessing an unprecedented 3,6,10,15-tetraoxatetracyclo[7.6.0.04,9.01,12]pentadecane motif with nine contiguous stereogenic centers. Their biosynthetic pathways were proposed to include a key intermolecular aldol reaction and an intramolecular 1,2-migration reaction. Piericone A (1) significantly inhibited in vitro platelet aggregation and fibrin formation and in vivo thrombus formation via the inhibition of extracellular PDI without increasing the bleeding risk. The molecular docking and dynamics simulation of 1 and 2 provided a novel structure basis to develop PDI inhibitors as potent antithrombotics.
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Affiliation(s)
- Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Keyu Lv
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, and The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei 430030, People's Republic of China
| | - Hao Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, and The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei 430030, People's Republic of China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Yenan Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Yaofeng Li
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, and The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei 430030, People's Republic of China
| | - Jiangeng Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
| | - Xulin Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, and The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei 430030, People's Republic of China
| | - F David Horgen
- Department of Natural Sciences, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Chao Fang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, and The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, People's Republic of China
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13
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Li L, Xu X, Lv K, Zheng G, Wang H, Chen S, Huang L, Liu Y, Zhang Y, Tang Z, Zhang L, Wang J, Qiao J, Li H, Wang X, Yao G, Fang C. Asebogenin suppresses thrombus formation via inhibition of Syk phosphorylation. Br J Pharmacol 2023; 180:287-307. [PMID: 36166754 DOI: 10.1111/bph.15964] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/24/2022] [Accepted: 09/11/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND PURPOSE Thrombosis is a major cause of morbidity and mortality worldwide. Platelet activation by exposed collagen through glycoprotein VI (GPVI) and formation of neutrophil extracellular traps (NETs) are critical pathogenic factors for arterial and venous thrombosis. Both events are regulated by spleen tyrosine kinase (Syk)-mediated signalling events. Asebogenin is a dihydrochalcone whose pharmacological effects remain largely unknown. This study aims to investigate the antithrombotic effects of asebogenin and the underlying molecular mechanisms. EXPERIMENTAL APPROACH Platelet aggregation was assessed using an aggregometer. Platelet P-selectin exposure, integrin activation and calcium mobilization were determined by flow cytometry. NETs formation was assessed by SYTOX Green staining and immunohistochemistry. Quantitative phosphoproteomics, microscale thermophoresis, in vitro kinase assay and molecular docking combined with dynamics simulation were performed to characterize the targets of asebogenin. The in vivo effects of asebogenin on arterial thrombosis were investigated using FeCl3 -induced and laser-induced injury models, whereas those of venous thrombosis were induced by stenosis of the inferior vena cava. KEY RESULTS Asebogenin inhibited a series of GPVI-induced platelet responses and suppressed NETs formation induced by proinflammatory stimuli. Mechanistically, asebogenin directly interfered with the phosphorylation of Syk at Tyr525/526, which is important for its activation. Further, asebogenin suppressed arterial thrombosis demonstrated by decreased platelet accumulation and fibrin generation and attenuated venous thrombosis determined by reduced neutrophil accumulation and NETs formation, without increasing bleeding risk. CONCLUSION AND IMPLICATIONS Asebogenin exhibits potent antithrombotic effects by targeting Syk and is a potential lead compound for the development of efficient and safe antithrombotic agents.
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Affiliation(s)
- Li Li
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xulin Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Keyu Lv
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hao Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuai Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yi Liu
- DeepKinase Biotechnologies Ltd., Beijing, China
| | | | - Zhaoming Tang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lili Zhang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jinyu Wang
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,The Key Laboratory of Oral and Maxillofacial Development and Regeneration of Hubei Province, Wuhan, Hubei, China
| | - Jianlin Qiao
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hongliang Li
- Laboratory of Chinese Herbal Pharmacology, Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China.,Biomedical Research Institute, School of Pharmaceutical Sciences and Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Xuanbin Wang
- Laboratory of Chinese Herbal Pharmacology, Department of Pharmacy, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China.,Biomedical Research Institute, School of Pharmaceutical Sciences and Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, Hubei, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chao Fang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China
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14
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Hou S, Wang X, Yu Y, Ji H, Dong X, Li J, Li H, He H, Li Z, Yang Z, Chen W, Yao G, Zhang Y, Zhang J, Bi M, Niu S, Zhao G, Zhu R, Liu G, Jia Y, Gao Y. Invasive fungal infection is associated with antibiotic exposure in preterm infants: a multi-centre prospective case-control study. J Hosp Infect 2023; 134:43-49. [PMID: 36646139 DOI: 10.1016/j.jhin.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
BACKGROUND Previous antibiotic exposure is an important risk factor for invasive fungal infection (IFI). Antibiotic overexposure is common in lower-income countries; however, multi-centre studies concerning IFI in relation to antibiotic exposure are scarce. AIM This prospective, multi-centre matched case-control study explored the correlation of IFI and antibiotic exposure in very preterm infants or very-low-birthweight infants admitted to 23 tertiary hospitals in China between 2018 and 2021. METHODS Using a 1:2 matched design for gestational age, birth weight and early-onset sepsis (yes/no), the risk factors between infants diagnosed with IFI and infection-free controls were compared. The antibiotic use rate (AUR) was calculated using calendar days of antibiotic therapy in the 4 weeks preceding IFI onset divided by onset day of IFI. FINDINGS In total, 6368 infants were included in the study, of which 90 (1.4%) were diagnosed with IFI. Median AUR, length of antibiotic therapy (LOT) and days of antibiotic therapy (DOT) within the 4 weeks preceding IFI onset were 0.90, 18 days and 30 days, respectively. Multi-variate analysis showed that a 10% increase in AUR, each additional day of DOT and LOT, and each additional day of third-generation cephalosporins and carbapenems were notably associated with IFI. CONCLUSION Prolonged antibiotic therapy is common before the onset of IFI, and is an important risk factor, especially the use of third-generation cephalosporins and carbapenems. Antibiotic stewardship should be urgently developed and promoted for preterm infants in order to reduce IFI in lower-income countries such as China.
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Affiliation(s)
- S Hou
- Department of Paediatrics, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - X Wang
- Department of Paediatrics, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Y Yu
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Department of Neonatology, Shandong Provincial Hospital, Shandong University, Jinan, China.
| | - H Ji
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Department of Neonatology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - X Dong
- Department of Neonatology, Shandong Provincial Maternal and Child Health Hospital, Jinan, Shandong, China
| | - J Li
- Department of Neonatology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - H Li
- Department of Neonatology, Hebei PetroChina Central Hospital, Langfang, China
| | - H He
- Department of Neonatology, Baogang Third Hospital of Hongci Group, Baotou, Inner Mongolia, China
| | - Z Li
- Department of Neonatology, W.F. Maternal and Child Health Hospital, Weifang, China
| | - Z Yang
- Department of Neonatology, Taian Maternal and Child Health Care Hospital, Taian, Shandong, China
| | - W Chen
- Department of Neonatology, People's Hospital of Rizhao, Rizhao, China
| | - G Yao
- Department of Neonatology, The Affiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, China
| | - Y Zhang
- Department of Neonatology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - J Zhang
- Department of Neonatology, Qilu Hospital of Shandong University, Jinan, China
| | - M Bi
- Department of Neonatology, Jinan Central Hospital, Jinan, China
| | - S Niu
- Department of Neonatology, Zibo Maternal and Child Health Hospital, Zibo, China
| | - G Zhao
- Department of Neonatology, Binzhou Medical University Hospital, Binzhou, China
| | - R Zhu
- Department of Neonatology, Zibo Municipal Hospital, Zibo, China
| | - G Liu
- Department of Neonatology, Yidu Central Hospital of Weifang, Weifang, China
| | - Y Jia
- Department of Neonatology, Shanxi Province Shangluo Central Hospital, Shanluo, China
| | - Y Gao
- Department of Neonatology, Qilu Hospital of Shandong University Dezhou Hospital, Shanluo, China
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15
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Yao G, Fan H, Wang R, Zhang Y, Du C, Chen B, Lin Z, Zhang T, Wu Z. 15P Prediction for pCR after neoadjuvant immunotherapy combined with chemotherapy using single-cell RNA sequencing in patients with locally advanced esophageal squamous cell carcinoma (escc): A single-arm phase II clinical trial. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Chen Z, Chen L, Sun Y, Li N, Chen R, Ma Y, Song W, Shi H, Xia L, Yao G. Association of differential meat quality traits with gut microbiota
in Angus cattle and Xinjiang Brown cattle. J Anim Feed Sci 2022. [DOI: 10.22358/jafs/153077/2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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17
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Liu Y, Wang M, Hu X, Wang L, Chen H, Li W, Feng Y, Zhang L, Yao G, Shi Y. EP16.02-017 Predictive Value of Peripheral Blood Immune Cell Profiling in EGFR-T790M Mutant Lung Adenocarcinoma. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Ke JP, Yu JY, Gao B, Hu FL, Xu FQ, Yao G, Bao GH. Two new catechins from Zijuan green tea enhance the fitness and lifespan of Caenorhabditis elegans via insulin-like signaling pathways. Food Funct 2022; 13:9299-9310. [PMID: 35968754 DOI: 10.1039/d2fo01795d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Green tea polyphenols show positive effects on human health and longevity. However, knowledge of the antiaging properties of green tea is limited to the major catechin epigallocatechin gallate (EGCG). The search for new ingredients in tea with strong antiaging activity deserves further study. Here we isolated and identified two new catechins from Zijuan green tea, named zijuanin E (1) and zijuanin F (2). Their structures were identified by extensive high-resolution mass spectroscopy (HR-MS), nuclear magnetic resonance (NMR), ultraviolet-vis (UV), infrared (IR) and circular dichroism (CD) spectroscopic analyses, and their 13C NMR and CD data were calculated. We used the nematode Caenorhabditis elegans (C. elegans) to analyze the health benefits and longevity effects of 1 and 2. Compounds 1 and 2 (100 μM) remarkably prolonged the lifespan of C. elegans by 67.2% and 56.0%, respectively, delaying the age-related decline of phenotypes, enhancing stress resistance, and reducing ROS and lipid accumulation. Furthermore, 1 and 2 did not affect the lifespan of daf-16, daf-2, sir-2.1, and skn-1 mutant worms, suggesting that they might work via the insulin/IGF and SKN-1/Nrf2 signaling pathways. Meanwhile, 1 and 2 also exhibited strong antioxidant activity in vitro. Surface plasmon resonance (SPR) evidence suggests that zijuanins E and F have strong human serum albumin (HSA) binding ability. Together, zijuanins E and F represent a new valuable class of tea components that promote healthspan and could be developed as potential dietary therapies against aging.
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Affiliation(s)
- Jia-Ping Ke
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Health Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
| | - Jing-Ya Yu
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Health Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Feng-Lin Hu
- Research Center on Entomogenous Fungi, Anhui Agricultural University, Hefei, 230036, China.
| | - Feng-Qing Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Guan-Hu Bao
- Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Health Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China.
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19
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Huang L, Zheng G, Feng Y, Jin P, Gao B, Zhang H, Ma X, Zhou J, Yao G. Highly Oxygenated Dimeric Grayanane Diterpenoids as Analgesics:
TRPV1
and
TRPA1
Dual Antagonists from
Rhododendron molle. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Xiaomin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
- Laboratory of Xinjiang Native Medicinal and Edible Plant Resource Chemistry, College of Chemistry and Environmental Science Kashi University Kashgar 844007 China
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20
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Zhou L, Zheng G, Li H, Gao B, Guoruoluo Y, Tang W, Yao G, Zhang Y. Highly oxygenated isoryanodane diterpenoids from the leaves of Cinnamomum cassia and their immunomodulatory activities. Phytochemistry 2022; 196:113077. [PMID: 34990976 DOI: 10.1016/j.phytochem.2021.113077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
A total of twelve highly oxygenated isoryanodane (also known as cinncassiol D-type) diterpenoids including nine undescribed ones, named cinnacassins A-I, were isolated from the leaves of Cinnamomum cassia. Their chemical structures were elucidated by extensive spectrometric and spectroscopic techniques including HRESIMS, 1D and 2D NMR, single-crystal X-ray diffraction analysis, calculated 13C-NMR DP4+ analysis, and chemical methods. The absolute configuration of cinnacassin A was unambiguously delineated by single-crystal X-ray diffraction analysis. Cinnacassin H represents the first example of 16-O-glucosylated isoryanodane diterpenoid, and cinnacassin I is the first isoryanod-13(18)-ene diterpenoid. The relationship of the configuration C-18 and the chemical shifts of H2-19 and C-20 in the 19-hydroxy-isoryanodane diterpenoids was discussed, and the 18S-configuration of three known 19-hydroxy-isoryanodane diterpenoids, cinncassiol D1, 19-O-β-D-glucopyranosyl-cinncassiol D1, and cinncassiol D3 was assigned. All the isolated isoryanodane diterpenoids were evaluated for their immunomodulatory effects in vitro, and cinnacassin A and cinncassiol D1 enhanced the proliferation of Con A-induced murine T cells with enhancement rates ranging from 17.9% to 45.4%, which were more potent than the positive control, thymosin α1. In addition, cinncassiol D1 significantly promoted the proliferation of LPS-induced murine B cells with an enhancement rate up to 116.1%, two-fold more potent than thymosin α1 at a concentration of 1.5625 μM.
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Affiliation(s)
- Lei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Heng Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Yindengzhi Guoruoluo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Wei Tang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China.
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21
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Song A, Qiu Y, Yin X, Xiong J, Yao G, Zhang C. POS-396 RHODOJAPONIN VI AMELIORATES PODOCYTE INJURY BY REGULATING MDM2/NOTCH1 PATHWAY IN RAT EXPERIMENTAL MEMBRANOUS NEPHROPATHY. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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22
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Feng Y, Zha S, Gao B, Zhang H, Jin P, Zheng G, Ma Y, Yao G. Discovery of Kalmane Diterpenoids as Potent Analgesics from the Flowers of
Rhododendron dauricum. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100764] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Suqin Zha
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Yilin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China
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23
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Jin P, Yuan X, Ma X, Zheng G, Wang R, Sun N, Yao G. Epoxymicranthols A—N, 5,
9‐Epoxygrayanane
Diterpenoids as Potent Analgesics from
Rhododendron micranthum. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100077] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Xinghua Yuan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Xiaomin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Ru Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Na Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology Wuhan Hubei 430030 China
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24
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Wang R, Zheng G, Dang T, Jin P, Yao J, Su L, Yao G, Qin D. Chemical constituents from the roots of Cichorium glandulosum Boiss. et Huet (Asteraceae). BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Kadir A, Zheng G, Zheng X, Jin P, Maiwulanjiang M, Gao B, Aisa HA, Yao G. Structurally Diverse Diterpenoids from the Roots of Salvia deserta Based on Nine Different Skeletal Types. J Nat Prod 2021; 84:1442-1452. [PMID: 33978415 DOI: 10.1021/acs.jnatprod.0c01180] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Twenty-four diterpenoids (1-24), classified into nine diverse carbon skeletal types, 8-nor-7(8→14),9(8→7)-di-abeo-abietane (1, 2, and 13), 7(8→14),9(8→7)-di-abeo-abietane (3 and 4), 6-nor-6,7-seco-abietane (5 and 6), 6,7-seco-abietane (7 and 11), 9,10-seco-abietane (8), abietane (9, 10, and 14-21), 11(9→8),20(10→11)-di-abeo-abietane (12), 15(13→12)-abeo-abietane (22 and 23), and 4,5-seco-20(10→5)-abeo-abietane (24), respectively, were isolated from the roots of Salvia deserta. The structures of 10 new diterpenoids, named salviadesertins A-J (1-10), were elucidated by spectroscopic data interpretation, quantum-chemical calculations including calculated 13C NMR-DP4+ analysis and electronic circular dichroism as well as X-ray crystallography analysis. The absolute configurations of compounds 1-3, 7, 14, and 22 were defined by single-crystal X-ray diffraction analysis. All the isolated diterpenoids 1-24 were evaluated for their cytotoxicity against five cancer cell lines, and 6-hydroxysalvinolone (14) showed micromolar potencies against MCF-7, A-549, SMMC-7721, and HL-60 cells, whereas the other diterpenoids were inactive (half-maximal inhibitory concentration greater than 10.0 μM).
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Affiliation(s)
- Abdukriem Kadir
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
- Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiaofeng Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Maitinuer Maiwulanjiang
- Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Haji Akber Aisa
- Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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26
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Chen S, Lv K, Sharda A, Deng J, Zeng W, Zhang C, Hu Q, Jin P, Yao G, Xu X, Ming Z, Fang C. Anti-thrombotic effects mediated by dihydromyricetin involve both platelet inhibition and endothelial protection. Pharmacol Res 2021; 167:105540. [PMID: 33711433 DOI: 10.1016/j.phrs.2021.105540] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/05/2021] [Accepted: 03/06/2021] [Indexed: 01/04/2023]
Abstract
Classical antithrombotics and antiplatelets are associated with high frequencies of bleeding complications or treatment failure when used as single agents. The platelet-independent fibrin generation by activated endothelium highlights the importance of vascular protection in addition to platelet inhibition in thrombosis prevention. Dihydromyricetin (DHM), the most abundant flavonoid in Ampelopsis grossedentata, has unique vasoprotective effects. This study aims to characterize the antithrombotic potential of DHM. The effects of DHM on the activation of platelets and endothelial cells were evaluated in vitro. Calcium mobilization and activation of mitogen-activated protein kinases (MAPKs) were examined as the potential targets of DHM based on molecular docking analysis. The in vivo effects of DHM were determined in FeCl3-injured carotid arteries and laser-injured cremasteric arterioles. The results showed that DHM suppressed a range of platelet responses including aggregation, secretion, adhesion, spreading and integrin activation, and inhibited exocytosis, phosphatidylserine exposure and tissue factor expression in activated endothelial cells. Mechanistically, DHM attenuated thrombin-induced calcium mobilization and phosphorylation of ERK1/2 and p38 both in platelets and endothelial cells. Intravenous treatment with DHM delayed FeCl3-induced carotid arterial thrombosis. Furthermore, DHM treatment inhibited both platelet accumulation and fibrin generation in the presence or absence of eptifibatide in the laser injury-induced thrombosis model, without prolonging ex vivo plasma coagulation or tail bleeding time. DHM represents a novel antithrombotic agent whose effects involve both inhibition of platelet activation and reduction of fibrin generation as a result of endothelial protection.
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Affiliation(s)
- Shuai Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Department of Pharmacology, School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou 550025, China
| | - Keyu Lv
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Anish Sharda
- Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Jun Deng
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Wanjiang Zeng
- Department of Perinatal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Chao Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology and Key Laboratory for Respiratory Diseases, Health Ministry of China, Wuhan, Hubei 430030, China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Xulin Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Zhangyin Ming
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Chao Fang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Hubei 430030, China.
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27
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Jin P, Zhan G, Zheng G, Liu J, Peng X, Huang L, Gao B, Yuan X, Yao G. Gelstriamine A, a Triamino Monoterpene Indole Alkaloid with a Caged 6/5/7/6/6/5 Scaffold and Analgesic Alkaloids from Gelsemium elegans Stems. J Nat Prod 2021; 84:1326-1334. [PMID: 33826318 DOI: 10.1021/acs.jnatprod.1c00062] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel triamino monoterpene indole alkaloid with an unprecedented skeleton, gelstriamine A (1), four new monoterpene indole alkaloids (2-5), and 12 known analogues (6-17) were isolated from Gelsemium elegans. The structures of 1-5 were established using extensive spectroscopic techniques, NMR calculations with iJ/dJ-DP4 and 2D C-H COSY ANNs analysis, ECD calculations, chemical methods, and single crystal X-ray diffraction analysis. Gelstriamine A (1) possesses an unprecedented 6/5/7/6/6/5 heterohexacyclic scaffold bearing a unique hexahydrooxazolo[4,5-b]pyridin-2(3H)-one motif, and a plausible biosynthetic pathway was proposed. All the isolated alkaloids 1-17 showed discernible analgesic activities in an acetic acid-induced writhing test in mice, and N-desmethoxyhumantenine N4-oxide (3) exhibited more potent analgesic activities than those of morphine at doses of 0.04 and 0.2 mg/kg.
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Affiliation(s)
- Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guanqun Zhan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiang Peng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Biao Gao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xinghua Yuan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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28
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Jin P, Zheng G, Yuan X, Ma X, Feng Y, Yao G. Structurally diverse diterpenoids with eight carbon skeletons from Rhododendron micranthum and their antinociceptive effects. Bioorg Chem 2021; 111:104870. [PMID: 33845382 DOI: 10.1016/j.bioorg.2021.104870] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 01/12/2023]
Abstract
Seventeen diterpenoids (1-17), classified into eight diverse carbon skeleton types, grayanane (1, 2, and 12), micranthane (3, 4, and 13), mollane (5-7 and 14), 1,5-seco-grayanane (8), kalmane (9-11), 1,5-seco-kalmane (15), A-homo-B-nor-ent-kaurane (16), and leucothane (17), respectively, were isolated from the leaves extract of Rhododendron micranthum. Among them, diterpenoids 1-9 are new compounds and their structures were elucidated via extensive spectroscopic methods, quantum chemical calculations including the 13C NMR-DP4+ analysis and electronic circular dichroism (ECD) calculations, and the single-crystal X-ray diffraction analysis. Micranthanol A (1) represents the first example of a 5αH,9αH-grayanane diterpenoid and a 6-hydroxy-6,10-epoxygrayanane diterpenoid, and micranthanone B (3) is the first 6,10-epoxymicranthane and the 5α-hydroxy-micranthane diterpenoids. 14-epi-Mollanol A (5) and mollanol B (6) represent the first examples of 14β-hydroxymollane diterpenoids. It is the first time to report mollane, 1,5-seco-kalmane, and A-homo-B-nor-ent-kaurane type diterpenoids from Rhododendron micranthum. All the seventeen diterpenoids showed significant antinociceptive activities at a dose of 5.0 mg/kg, and it is the first time to evaluate the antinociceptive activity of 1,5-seco-kalmane diterpenoid. Among them, compounds 3, 11, 14, and 15 exhibited significant antinociceptive activities even at a lower dose of 1.0 mg/kg. A preliminary structure-activity relationship for the antinociceptive effects of diterpenoids 1-17 is discussed, which provided a new basis to develop novel potent analgesics.
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Affiliation(s)
- Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xinghua Yuan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xiaomin Ma
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
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Fang W, Hu J, Huang Y, Xu C, Wang W, Yao G, Shao Y, Zhang L. P76.90 Molecular Characteristics of BRAF Mutations in EGFR Mutant NSCLC after Progression on EGFR TKIs and Response to Combination Targeted Therapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wang Y, Wen C, Ye J, Huang H, Zhang Y, Yuan H, Yao G, Yu M. [Cytotoxic effect of photodynamic liposome gel combined with trastuzumab on drugresistant breast cancer cells in vitro]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:164-172. [PMID: 33624588 DOI: 10.12122/j.issn.1673-4254.2021.02.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To evaluate the cytotoxic effect of photodynamic therapy (PDT) combined with targeted therapy using cross-linked liposomes and gels (Ce6-PC-Tmab@A-Gel) loaded with photosensitizer Chlorin (Ce6) and the tumor-targeting drug Trastuzumab (Tmab) in drug-resistant HER2+ breast cancer cells. OBJECTIVE Ce6-PC-Tmab liposomes were prepared using the thin-film hydration method. The general properties, encapsulation efficiency and near-infrared responsivity of the nanoparticles were evaluated. Ce6-PC-Tmab@A-Gel with a shear response was prepared by freeze drying and stirring crosslinking, and its microstructure was observed with scanning electron microscopy (SEM) and the shear response evaluated using a rheometer. The inhibitory effect of Ce6-PC-Tmab@A-Gel in drug-resistant HER2+ breast cancer SK-BR-3 cells was assessed with cytotoxicity assay (MTT assay) combined with near-infrared light. OBJECTIVE The particle size of Ce6-PC-Tmab was 239.7±9.7 nm and the potential was -2.03±0.09 mV. The entrapment efficiency of Tmab by Ce6-PC-Tmab liposomes was (40.22± 0.73)%. The prepared Ce6-PC-Tmab@A-Gel had a good shear response with excellent drug release characteristics under nearinfrared light, and increased intensity and duration of near-infrared light exposure enhanced Tmab release from the gel. Ce6-PC-Tmab@A-Gel was stable at room temperature and in a simulated tumor microenvironment (pH 6.25). Cytotoxicity assay (MTT) showed that Ce6-PC-Tmab@A-Gel combined with near-infrared light resulted in a survival rate of (31.37±1.73)% in SKBR-3 cells, much lower than that in the control group and other treatment groups (P < 0.01); the combined treatment also had a high efficiency of ROS production, and ROS release reached (22.36 ± 0.11)% after 2 min of near-infrared light exposure. OBJECTIVE The prepared Ce6-PC-Tmab@A-Gel has good near-infrared light response release characteristics to ensure effective targeted therapy with Tmab. The injectable gel system potentially allows long-term local drug release in the tumor to improve the treatment efficacy against drug-resistant breast cancer.
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Affiliation(s)
- Y Wang
- Department of Mammary Gland, Dongguan People's Hospital Affiliated to Southern Medical University, Dongguan 523000, China
| | - C Wen
- Department of Mammary Gland, Nanfang Hospital, Guangzhou 510515, China
| | - J Ye
- Department of Mammary Gland, Dongguan People's Hospital Affiliated to Southern Medical University, Dongguan 523000, China
| | - H Huang
- Department of Mammary Gland, Dongguan People's Hospital Affiliated to Southern Medical University, Dongguan 523000, China
| | - Y Zhang
- Department of Mammary Gland, Dongguan People's Hospital Affiliated to Southern Medical University, Dongguan 523000, China
| | - H Yuan
- Department of Mammary Gland, Dongguan People's Hospital Affiliated to Southern Medical University, Dongguan 523000, China
| | - G Yao
- Department of Mammary Gland, Nanfang Hospital, Guangzhou 510515, China
| | - M Yu
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
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Tang J, Xu XY, Luo BL, Yang L, Zhang XL, Sun YD, Hou ZQ, Yao G. Potential role of lnc-PTGS2 in fibrosis progression after laminectomy via targeting EGR1. J BIOL REG HOMEOS AG 2021; 34:2237-2244. [PMID: 33198452 DOI: 10.23812/20-281-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- J Tang
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China.,Nanjing Shuangjian Medical Technology Co., Ltd., Nanjing, China
| | - X Y Xu
- Department of Ophthalmology, Affiliated Hospital with Nanjing University of Chinese Medicine, Nanjing, China
| | - B L Luo
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - L Yang
- Department of Orthopedics, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - X L Zhang
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Y D Sun
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Z Q Hou
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - G Yao
- Department of Plastic and Burn Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
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Zheng X, Kadir A, Zheng G, Jin P, Qin D, Maiwulanjiang M, Aisa HA, Yao G. Antiproliferative abietane quinone diterpenoids from the roots of Salvia deserta. Bioorg Chem 2020; 104:104261. [DOI: 10.1016/j.bioorg.2020.104261] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 12/16/2022]
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Mohammad A, Azinfar L, Johannesen E, Yao G, Hunter M. Stromal imaging in precancerous cervical lesions. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zhang H, Zheng X, Zheng G, Teng Y, Zhou J, Yao G. Chemical constituents from the leaves of Lyonia ovalifolia var. hebecarpa. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang Q, Smalley A, Zhu Z, Xu Z, Peng C, Chen Z, Yao G, Shi J, Zhu W. Computational study of the substituent effect of halogenated fused-ring heteroaromatics on halogen bonding. J Mol Model 2020; 26:270. [PMID: 32930882 DOI: 10.1007/s00894-020-04534-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/03/2020] [Indexed: 10/23/2022]
Abstract
Halogen bonding (XB) has been applied in many fields from crystal engineering to medicinal chemistry. Compared with the well-studied XB of simple halogenated aromatics, little research has been done on the XB of halogenated fused-ring heteroaromatics, a prevalent substructure in organic compounds. With 1H-pyrrolo[3,2-b]pyridines (PPs) as examples of novel fused-ring heteroaromatics with hydrogen bond donor and acceptor and XB donor, the XB formed by the halogenated heteroaromatics was explored in this study. With 4 different substituents, viz., -CH3, -NH2, -F, and -CONH2, at different positions, 339 derivatives of brominated PP (Br-PP) were designed for calculating their electrostatic potential of the σ-hole of the halogen atom (VS,max) and binding energy with ammonia as XB acceptor (Eint) at M06-2X/6-311++G(d,p) level by PCM model in dichloromethane. The calculated VS,max values ranging from -1.3 to 35.1 kcal/mol and the calculated Eint ranging from -0.82 to -2.37 kcal/mol demonstrated that the XB is complicated and highly tunable. Noticeably, the electron-withdrawing substituents, especially at ortho-position, do not always increase the values of VS,max, while the electron-donating substituents do not always decrease VS,max. Similar results were observed from the calculation on 339 iodinated PPs at M06-2X/6-311++G(d,p) level. The complexity of the XB formed by the halogenated fused ring heteroaromatics indicated a great potential of tuning its strength by different substituents at different positions and revealed a necessity of quantum chemistry calculation for predicting the XB.Graphical abstract.
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Affiliation(s)
- Qihua Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | | | - Zhengdan Zhu
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Zhijian Xu
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Cheng Peng
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Zhaoqiang Chen
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Guangmin Yao
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Jiye Shi
- UCB Pharma, 208 Bath Road, Slough, SL1 3WE, UK
| | - Weiliang Zhu
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
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Ma Y, Bian C, Song D, Yao G, Nie R. 3,4-Methylenedioxymethamphetamine causes retinal damage in C57BL/6J mice. Hum Exp Toxicol 2020; 39:1556-1564. [PMID: 32552070 DOI: 10.1177/0960327120930253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
3,4-Methylenedioxymethamphetamine (MDMA) is a powerfully addictive psychostimulant with pronounced effects on the central nervous system, but the precise mechanism of MDMA-induced toxicity remains unclear, specifically on the retina. This study was performed to investigate the effects of MDMA treatment on the retina and explore the underlying mechanism. C57BL/6J mice were randomly divided into control and MDMA groups. Mice were treated with MDMA at progressively increasing doses (1-6 mg/kg) intraperitoneally 4 times per day. Electroretinography was used to test the retinal function. Pathological changes of the retina were examined by toluidine blue staining and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling assay. Enzyme-linked immunosorbent assays were used to measure the levels of cytokines in the retina. Real-time polymerase chain reaction and Western blot were used to measure gene and protein expression in the retina, respectively. Our study showed that MDMA treatment impaired retinal function and decreased retinal thickness. MDMA treatment also increased transforming growth factor β as well as inflammatory factors in the retina. Moreover, MDMA treatment increased protein expression of matrix metalloproteinases (MMPs) and decreased tight junction protein expression in the retina. Our study indicated that treatment of MDMA caused retinal damage in C57BL/6J mice, associated with an increase of MMPs and a decrease of tight junction proteins.
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Affiliation(s)
- Y Ma
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China
| | - C Bian
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China.,Department of Ophthalmology, The First People's Hospital of Tai'an, Tai'an, People's Republic of China
| | - D Song
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China
| | - G Yao
- Department of Ophthalmology, The First People's Hospital of Tai'an, Tai'an, People's Republic of China
| | - R Nie
- Department of Geriatrics III, Tai'an City Central Hospital, Tai'an, People's Republic of China
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Yao G, Wang S, Sun L. THU0226 MESENCHYMAL STEM CELL TRANSPLANTATION AMELIORATES EXPERIMENTAL SJÖGREN’S SYNDROME BY DOWNREGUALTING MDSCS VIA COX2/PGE2 PATHWAY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Although mesenchymal stem cells (MSCs) transplantation have been demonstrated to be an effective therapeutic approach to treat experimental Sjögren’s syndrome (ESS)1, the specific underlying mechanisms remain to be elucidated. Myeloid-derived suppressor cells (MDSCs) were significantly increased with decreased suppressive capacity during disease development in ESS2-3. However, the therapeutic effects and mechanisms by which MSCs regulating MDSCs in SS still remain unknown.Objectives:Here we aim to explore whether regulation of MDSCs was responsible for the beneficial effects of MSC transplantation on SS.Methods:The MSCs were infused intonon-obese diabetic (NOD) mice via the tail vein. The histological features of submandibular glands, lung, saliva flow rate were evaluated. The number and immune-suppressive activity of MDSCs, the subsets of MDSCs, polymorphonuclear MDSCs (PMN-MDSCs) and monocytic-MDSCs (M-MDSCs) in NOD mice were determined. The bone marrow cells under MDSCs differentiation conditions were co-cultured with or without MSCs. The COX2 inhibitor NS-398, anti-TGF-β1, or anti-IFN-β antibodies were added to coculture medium of MSCs and MDSCs induced from bone marrow cells respectively.Results:We found that MDSCs in bone marrow and peripheral blood increased in ESS mice. MSC transplantation ameliorated SS-like syndrome and down-regulated the percentages of MDSCs, PMN-MDSCs and M-MDSCs and promoted their suppressive ability in ESS mice significantly (Figure 1). In vitro, MSCs could down-regulate the differentiation and up-regulate the suppressive ability of MDSCs. Mechanistically, MSCs inhibited the differentiation of MDSCs and PMN-MDSCs via secreting prostaglandin E2, and inhibited the differentiation of M-MDSCs by secreting interferon-β (Figure 2).Figure 1.MSCs ameliorated SS symptoms and decreased MDSCs in NOD mice.Figure 2.MSCs inhibited the differentiation of PMN-MDSCs and M-MDSCs by COX2/PGE2 and IFN-β respectively.Conclusion:Our findings suggested that MSCs alleviated SS-like symptoms by suppressing the aberrant accumulation and improving the suppressive function of MDSCs in ESS mice via COX2/PGE2 pathway.References:[1]Shi B, Qi J, Yao G, et al. Mesenchymal stem cell transplantation ameliorates Sjögren’s syndrome via suppressing IL-12 production by dendritic cells. Stem Cell Res Ther, 2018; 9(1):308.[2]Qi J, Li D, Shi G, et al. Myeloid-derived suppressor cells exacerbates Sjögren’s syndrome by inhibiting Th2 immune responses. Mol Immunol, 2018; 101:251-258.[3]Tian J, Rui K, Hong Y, et al. Increased GITRL impairs the function of myeloid-derived suppressor cells and exacerbates primary Sjögren’s syndrome. J Immunol, 2019; 202(6):1693-1703.Disclosure of Interests:None declared
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Wang W, Wen X, Duan W, Wang X, Chen Y, Dong J, Yang Z, Fang J, Zhou Z, Yao G, Fang Y, Huang Y. DR10601, a novel recombinant long-acting dual glucagon-like peptide-1 and glucagon receptor agonist for the treatment of obesity and type 2 diabetes mellitus. J Endocrinol Invest 2020; 43:653-662. [PMID: 31786794 DOI: 10.1007/s40618-019-01153-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/21/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE Both glucagon-like peptide-1 (GLP-1) and glucagon (GCG) belong to the incretin family. This study aimed to investigate the pharmacokinetics and pharmacodynamics of DR10601, a fully recombinant hybrid peptide with dual GLP-1/GCG receptor agonistic activity. METHODS The agonistic ability of DR10601 was indirectly assessed by inducing cAMP accumulation in Chinese hamster ovary cells transfected with GLP-1R or GCGR in vitro. Following s.c. administration, the plasma pharmacokinetics of DR10601 were analysed in male Sprague-Dawley rats. The antiobesity effects and improved glycaemic control of DR10601 in vivo were evaluated by administering DR10601 to high-fat DIO mice and ICR mice as a single dose or repeated s.c. doses once every 4 days for 24 days. RESULTS DR10601 exhibits dual agonistic activity on GLP-1 and glucagon receptors. The plasma half-life of DR10601 in Sprague-Dawley rats following s.c. administration was 51.9 ± 12.2 h. In an IPGTT, a single s.c. dose of DR10601 (30 nmol/kg) produced similar glycaemic control effects and a longer duration of action compared to dulaglutide (10 nmol/kg). Compared with that achieved with liraglutide (40 nmol/kg) s.c. administered daily, DR10601 administered s.c. once every 4 days at 90 nmol/kg exerted a nearly equivalent effect on food intake and significantly reduced the body weights of high-fat DIO mice at 24 days. CONCLUSIONS Repeated administration of DR1060 provides potent and sustained glycemic control and body weight loss effect in high-fat DIO mice. DR10601 is a promising long-acting agent deserving further investigation for the treatment of type 2 diabetes and obesity.
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Affiliation(s)
- W Wang
- Department of Pharmacy, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - X Wen
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - W Duan
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - X Wang
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - Y Chen
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - J Dong
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - Z Yang
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - J Fang
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - Z Zhou
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - G Yao
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - Y Fang
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China
| | - Y Huang
- Zhejiang Doer Biologics Corporation, No. 452 Avenue 6, Hangzhou Economic and Technological Development Zone, Hangzhou, 310018, Zhejiang, China.
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Zheng G, Jin P, Huang L, Zhang Q, Meng L, Yao G. Structurally diverse diterpenoids from Pieris japonica as potent analgesics. Bioorg Chem 2020; 99:103794. [PMID: 32247938 DOI: 10.1016/j.bioorg.2020.103794] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/18/2020] [Accepted: 03/23/2020] [Indexed: 10/24/2022]
Abstract
Sixteen diterpenoids (1-16) including 10 new ones, pierisjaponins A-J (1-10), were isolated and identified from Pieris japonica, and their structures were classified into eight diverse carbon skeletons. Pierisjaponins A (1) and B (2) represent the first 1,5-seco-grayanane diterpenoid glucosides and only showed 17 carbon resonances instead of 26 carbons in the 13C NMR spectra, their structures were finally defined by single-crystal X-ray diffraction, and the unusual NMR phenomena were explained. Pierisjaponin E (5) is the first mollane diterpene glucoside. This is the first time to report ent-labdane (3, 4, and 11) and ent-rosane (15) type diterpenoids from the Ericaceae plants, which provided the precursors of the Ericaceae diterpenoids and enlarged the chemical diversity of Ericaceae diterpenoids. All the 16 isolates showed potent analgesic activities, and this is the first time to describe the analgesic activities of 1,5-seco-grayanane, ent-labdane, mollane, and ent-rosane type diterpenoids. A preliminary structure-activity relationship is discussed, which provided new clues to design novel analgesics based on the Ericaceae diterpenoids.
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Affiliation(s)
- Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Qihua Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Lingkui Meng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
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Zhang H, Peng X, Zheng X, Li S, Teng Y, Liu J, Zou C, Yao G. Lanostane triterpene glycosides from the flowers of Lyonia ovalifolia var. hebecarpa and their antiproliferative activities. Bioorg Chem 2020; 96:103598. [DOI: 10.1016/j.bioorg.2020.103598] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 01/14/2020] [Accepted: 01/19/2020] [Indexed: 01/07/2023]
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Zheng G, Jin P, Huang L, Sun N, Zhang H, Zhang H, Yue M, Meng L, Yao G. Grayanane diterpenoid glucosides as potent analgesics from Pieris japonica. Phytochemistry 2020; 171:112234. [PMID: 31901735 DOI: 10.1016/j.phytochem.2019.112234] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/14/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
A total of fifteen grayanane diterpenoid glucosides including eight undescribed ones, pierisjaponosides A-H, were isolated from the leaves of Pieris japonica (Thunb.) D. Don ex G. Don (Ericaceae). Their structures were established by extensive spectros copic techniques including HRESIMS and NMR, as well as chemical methods. The absolute configurations of pierisjaponosides A, B, and D were finally established by single-crystal X-ray diffraction with Cu Kα radiation. This is the first time to report the crystal structure of a 5,9-epoxygrayanane diterpenoid glucoside. Pierisjaponoside E represents the first example of a 9β-hydroxygrayan-1(10)-ene diterpenoid. All the isolated grayanane diterpenoid glucosides were evaluated for their analgesic activities in the acetic acid-induced writhing models in mice, and showed significant analgesic effects. Pierisjaponosides A and C-H, micranthanoside A, pieroside A, and craiobiosides A and B displayed significant analgesic effects with the writhe inhibition rates over 50% at a dose of 5.0 mg/kg. Pierisjaponoside E exhibited significant analgesic activities with the percentage inhibitions of 81.7%, 70.4%, and 52.1% at the doses of 5.0, 1.0, and 0.2 mg/kg, respectively. The preliminary structure-activity relationships of grayanane diterpenoid glucosides as potent analgesics were discussed, giving some clues to design novel analgesics.
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Affiliation(s)
- Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Lang Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Na Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, PR China
| | - Mingbo Yue
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, PR China
| | - Lingkui Meng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China.
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Zhou J, Wu Z, Guo B, Sun M, Onakpa MM, Yao G, Zhao M, Che CT. Modified diterpenoids from the tuber of Icacina oliviformis as protein tyrosine phosphatase 1B inhibitors. Org Chem Front 2020. [DOI: 10.1039/c9qo01320b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two modified diterpenoids featuring a novel 4,12-dioxatetracyclo[8.6.0.02,7.010,14]hexadecane core, together with a 3,4-seco-pimarane, a 3,4-seco-cleistanthane, and eight pimarane derivatives were isolated from the tuber of Icacina oliviformis.
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Affiliation(s)
- Junfei Zhou
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Zhenlong Wu
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Brian Guo
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Meng Sun
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Monday M. Onakpa
- Department of Veterinary Pharmacology and Toxicology
- Faculty of Veterinary Medicine
- University of Abuja
- Abuja 920001
- Nigeria
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Ming Zhao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing 210023
- People's Republic of China
| | - Chun-Tao Che
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
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Zhou J, Zuo Z, Liu J, Zhang H, Zheng G, Yao G. Discovery of highly functionalized 5,6-seco-grayanane diterpenoids as potent competitive PTP1B inhibitors. Org Chem Front 2020. [DOI: 10.1039/c9qo01538h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three competitive PTP1B inhibitory diterpenoids with a 5,6-seco-grayanane carbon skeleton (1–3) were isolated and identified fromRhododendron molle. A more potent competitive PTP1B inhibitor (9) was designed and prepared based on a docking study.
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Affiliation(s)
- Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Zhili Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Science
- Kunming 650204
- China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
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45
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Zheng G, Kadir A, Zheng X, Jin P, Liu J, Maiwulanjiang M, Yao G, Aisa HA. Spirodesertols A and B, two highly modified spirocyclic diterpenoids with an unprecedented 6-isopropyl-3H-spiro[benzofuran-2,1′-cyclohexane] motif from Salvia deserta. Org Chem Front 2020. [DOI: 10.1039/d0qo00735h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Two highly modified spirocyclic diterpenoids with an unprecedented 6-isopropyl-3H-spiro[benzofuran-2,1′-cyclohexane] motif and four new icetexane diterpenoids were isolated from Salvia deserta. 1 showed more potent cytotoxicity than cis-platin.
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Affiliation(s)
- Guijuan Zheng
- Key Laboratory of Plant Resources and Chemistry of Arid Zone
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi, Xinjiang 830011
- People' Republic of China
| | - Abdukriem Kadir
- Key Laboratory of Plant Resources and Chemistry of Arid Zone
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi, Xinjiang 830011
- People' Republic of China
| | - Xiaofeng Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan, Hubei 430030
| | - Pengfei Jin
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan, Hubei 430030
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan, Hubei 430030
| | - Maitinuer Maiwulanjiang
- Key Laboratory of Plant Resources and Chemistry of Arid Zone
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi, Xinjiang 830011
- People' Republic of China
| | - Guangmin Yao
- Key Laboratory of Plant Resources and Chemistry of Arid Zone
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi, Xinjiang 830011
- People' Republic of China
| | - Haji Akber Aisa
- Key Laboratory of Plant Resources and Chemistry of Arid Zone
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi, Xinjiang 830011
- People' Republic of China
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Zheng G, Zhou J, Huang L, Zhang H, Sun N, Zhang H, Jin P, Yue M, Meng L, Yao G. Antinociceptive Grayanane Diterpenoids from the Leaves of Pieris japonica. J Nat Prod 2019; 82:3330-3339. [PMID: 31809052 DOI: 10.1021/acs.jnatprod.9b00569] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thirteen new grayanane diterpenoids (1-13) and 15 known analogues (14-28) were isolated from a leaf extract of Pieris japonica. Their structures were determined by spectrometric and spectroscopic methods, including HRESIMS, NMR, IR, and UV. The absolute configurations of 1, 3, 7-9, and 16 were defined by single-crystal X-ray diffraction analysis. 17-Hydroxygrayanotoxin XIX (1) represents the first example of a 17-hydroxygrayan-15(16)-ene diterpenoid. Diterpenoids 1-28 were evaluated for their antinociceptive activities, and 4, 9, 13, 21, and 26-28 displayed significant antinociceptive activities at a dose of 5.0 mg/kg (ip) in the HOAc-induced writhing test in mice. 17-Hydroxygrayanotoxin XIX (1) exhibited potent antinociceptive effects with writhe inhibition rates of 56.3% and 64.8% at doses of 0.04 and 0.2 mg/kg, respectively, which were almost equivalent to the positive control, morphine. Rhodomollein X (26) and rhodojaponin VI (27) showed more potent antinociceptive effects than morphine at doses of 0.04 and 0.2 mg/kg. A preliminary structure-activity relationship for the antinociceptive effects of diterpenoids 1-28 is discussed.
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Affiliation(s)
- Guijuan Zheng
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Junfei Zhou
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Lang Huang
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , People's Republic of China
| | - Na Sun
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Hanqi Zhang
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Pengfei Jin
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Mingbo Yue
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , People's Republic of China
| | - Lingkui Meng
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Guangmin Yao
- School of Pharmacy , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
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Sun N, Feng Y, Zhang Q, Liu J, Zhou H, Zhang H, Zheng G, Zhou J, Yao G. Analgesic diterpenoids with diverse carbon skeletons from the leaves of Rhododendron auriculatum. Phytochemistry 2019; 168:112113. [PMID: 31494343 DOI: 10.1016/j.phytochem.2019.112113] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
Sixteen diterpenoids including nine undescribed ones, named rhodoauriculatols A-I, were isolated from the leaves of Rhododendron auriculatum Hemsl. Sixteen diterpenoids belong to seven diverse carbon skeletons, which were classified into 1,10-seco-grayanane, 1,10:2,3-diseco-grayanane, A-homo-B-nor-ent-kaurane, ent-kaurane, 4,5-seco-ent-kaurane, leucothane, and grayanane, respectively. Their structures were determined by the detailed HRESIMS, 1D and 2D NMR, UV, and IR data analysis, and their absolute configurations were established by single crystal X-ray diffraction analysis, electronic circular dichroism (ECD) data analysis, ECD calculation, as well as chemical methods. Rhodoauriculatols A-C possess a rare 1,10-seco-grayanane diterpene skeleton. Rhodoauriculatol D is the second example of the 1,10:2,3-diseco-grayanane diterpenoids, and rhodoauriculatol E is the fourth example of the A-homo-B-nor-ent-kaurane diterpenoids. Rhodomicranone E was reported as a natural product for the first time. All the isolated sixteen diterpenoids showed analgesic activities in the acetic acid-induced writhing test. Rhodoauriculatols B, E-G, rhodomicranone E, pierisformoside F, and micranthanoside A showed significant analgesic activities with the inhibition rates over 40%, and their preliminary structures-activity relationships were studied.
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Affiliation(s)
- Na Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Yuanyuan Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Qihua Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Haofeng Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China.
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Chen Y, Zhou J, Ren K, Zou C, Liu J, Yao G, He J, Zhao G, Huang W, Hu B, Chen Y, Xiong K, Jin Y. Effects of enzymatic browning reaction on the usability of tobacco leaves and identification of components of reaction products. Sci Rep 2019; 9:17850. [PMID: 31780730 PMCID: PMC6882896 DOI: 10.1038/s41598-019-54360-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 11/12/2019] [Indexed: 11/08/2022] Open
Abstract
The enzyme browning reaction results in grey speckles on tobacco leaves, which impairs the value and industrial usability of tobacco leaves. To demonstrate the influences of different browning degrees (BDs) of tobacco leaves on the usability of different cultivars and positions and identified structure of brown (grey) matter, we selected three flue-cured tobacco cultivars (K326, Yunyan87, and Honghuadajinyuan (Hongda)) and set four different BDs (<25%, 25% to 50%, 50% to 75%, and >75%). Indices related to: economic traits, chemical components, physical properties, and sensory quality of tobacco leaves with different cultivars were evaluated. Moreover, by utilising thin-layer chromatography and high-performance liquid chromatography, we analysed and identified the structure of the grey matter in terms of chemical composition. The experimental results show that the main component of grey speckles on tobacco leaves is 3-acetyl-6,7-dimethoxycoumarin (YC-ZJF). With the increase of BD, the amount of total sugar and reducing sugar, output value, the proportion of superior tobacco, shatter resistance index, and sensory evaluation score of the three cultivars significantly decrease, while the starch content increases significantly. The changes in protein, total nitrogen, and nicotine are insignificant with changing BD. In addition, other indices show different trends for different cultivars of flue-cured tobacco. After separation and identification of the components of grey speckled leaves, it is proved that the substance derived from grey speckles on tobacco leaves is YC-ZJF. The research is important to the study of browning mechanisms in tobacco leaves and provides corresponding targets for strategies to reduce browning thereof.
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Affiliation(s)
- Yanjie Chen
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
- College of Tobacco Science, Yunnan Agricultural University, Kunming, 650201, China
| | - Junfei Zhou
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei, 430030, China
| | - Ke Ren
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
- College of Tobacco Science, Yunnan Agricultural University, Kunming, 650201, China
| | - Congming Zou
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China.
| | - Junjun Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei, 430030, China
| | - Guangmin Yao
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei, 430030, China
| | - Jianshen He
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
- College of Tobacco Science, Yunnan Agricultural University, Kunming, 650201, China
| | - Gaokun Zhao
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Wei Huang
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Binbin Hu
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Yi Chen
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Kaisheng Xiong
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Yan Jin
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
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Qiu Y, Zhou J, Zhang H, Zhou H, Tang H, Lei C, Ye C, You C, Chen Y, Wang Y, Xiong J, Su H, Yao G, Zhang C. Rhodojaponin II attenuates kidney injury by regulating TGF-β1/Smad pathway in mice with adriamycin nephropathy. J Ethnopharmacol 2019; 243:112078. [PMID: 31301369 DOI: 10.1016/j.jep.2019.112078] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 06/11/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Rhododendron molle G. Don (Ericaceae) (RM) is a natural medicinal plant. Its root extracts have been applied in clinic and proved to be effective in chronic glomerulonephritis and rheumatoid arthritis in China. Surprising, little is understood about the key compound of RM and the exact mechanisms underlying its treatment on kidney diseases. In this study, we will explore whether rhodojaponin II (R-II), as the important compound of RM, also exerts the major effect. MATERIALS AND METHODS Mouse model of focal segmental glomerulosclerosis was induced by single dose of adriamycin injection. Induced adriamycin nephropathy (ADRN) mice were treated individually with RM root extract (5 mg/kg, n = 5), RM root extract (60 mg/kg, n = 5), R-II (0.04 mg/kg, n = 6) or captopril (30 mg/kg, n = 5) for five weeks. Podocyte marker (nephrin and podocin) expressions were examined by immunohistochemical staining and Western Blot analysis. Fibronectin level was evaluated by immunohistochemical staining and Western Blot analysis. Interstitial infiltrated inflammatory cells (CD4+ T cells, CD8+ T cells, and CD68+ macrophages) were examined with immunohistochemical staining. The expressions of NF-ĸB p-p65 and TGF-β1/Smad pathway associated key proteins, such as TGF-β1, Smad3, phosphorylated-Smad3 (p-Smad3), and Smad7, were analyzed respectively by Western Blot analysis. RESULTS RM root extract (5 mg/kg) and its important compound R-II (0.04 mg/kg) significantly ameliorated proteinuria, podocyte injury, and glomerulosclerosis, meanwhile, they hampered interstitial fibrosis in mice with ADRN. R-II significantly reduced NF-ĸB p65 phosphorylation, interstitial infiltrated CD4+ T cells, CD8+ T cells, and CD68+ macrophages, at the same time, down-regulated TGF-β1 and p-Smad3 protein expressions in mice with ADRN. CONCLUSION RM root extract, R-II, could effectively ameliorate proteinuria and kidney injury in ADRN, related to its anti-inflammatory effects, as well as suppression of TGF-β1/Smad signaling pathway.
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Affiliation(s)
- Yue Qiu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haofeng Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Tang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chuntao Lei
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Ye
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chaoqun You
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Chen
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yumei Wang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Xiong
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Zhou J, Wu Z, Oyawaluja BO, Coker HAB, Odukoya OA, Yao G, Che CT. Protein Tyrosine Phosphatase 1B Inhibitory Iridoids from Psydrax subcordata. J Nat Prod 2019; 82:2916-2924. [PMID: 31618031 DOI: 10.1021/acs.jnatprod.9b00770] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phytochemical investigation of the leaves and bark of Psydrax subcordata has led to the isolation of six new iridoids, subcordatanols I-V (1-4 and 6) and 1-O-methylcrescentin I (5), along with two known analogues (7 and 8). Among them, subcordatanol I (1) is the first example of a 3,8-monoepoxy-iridoid featuring a caged 2-oxa-bicyclo[3.2.1]octane core. The absolute stereochemistry at C-4 of 3, 4, and 6 was established through their acid-catalyzed reaction products subcordatalactones A (3a), B (4a), and C (6a), respectively. Subcordatanols I (1) and II (2), as well as subcordatalactones A (3a) and B (4a), displayed inhibitory activity against protein tyrosine phosphatase 1B (PTP1B). Enzyme kinetic studies indicated that 3a and 4a are competitive inhibitors. A molecular docking study is also reported.
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Affiliation(s)
- Junfei Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Zhenlong Wu
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Bamisaye O Oyawaluja
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | | | | | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Chun-Tao Che
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
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